$OpenBSD: patch-configure_ac,v 1.1.1.1 2017/01/15 17:13:33 sthen Exp $
--- configure.ac.orig	Thu Jan 12 21:38:07 2017
+++ configure.ac	Thu Jan 12 21:38:11 2017
@@ -81,7 +81,7 @@ PROGRAM_LDFLAGS="$PIE_LDFLAGS $PROGRAM_LDFLAGS"
 AC_SUBST([PROGRAM_LDFLAGS])
 
 AC_SUBST([AM_CPPFLAGS],
-  ["AS_ESCAPE([-I$(top_builddir) -I$(top_srcdir)]) -Wall -O3 -pthread $BOOST_CPPFLAGS"]
+  ["AS_ESCAPE([-I$(top_builddir) -I$(top_srcdir)]) -Wall -pthread $BOOST_CPPFLAGS"]
 )
 
 AC_CONFIG_FILES([Makefile
